Trait value of Stipa krylovii populations in control and drought treatments

Understanding patterns of intraspecific trait variation can help us understand plant adaptability to environmental changes. To explore the underlying adaptation mechanisms of zonal plant species, we selected seven populations of Stipa krylovii, a dominant species in the Inner Mongolia Steppe of China, and evaluated the effects of phenotypic plasticity and genetic differentiation, the effects of climate variables on population trait differentiation, and traits coordinated patterns under each soil moisture treatment. We selected seeds from seven populations of S. krylovii in the Inner Mongolia Steppe, China, and carried out a soil moisture (2) × population origin (7) common garden experiment at Tianjin City, China, and measured ten plant traits of S. krylovii. General linear analyses were used to analyze how soil moisture and population origin affect each trait variation, Mantel tests were used to analyze population trait differentiation - geographic distance (or climatic difference) rela..., , , # Trait value of *Stipa krylovii* populations in control and drought treatment.

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Original measurement data of 10 traits in 7 populations of *Stipa krylovii* in a soil moisture (2) × population origin (7) common garden experiment.
In the data cell, only 7 samples were set up to specific leaf area and Leaf N content, so “null” means no measurement data here. The sample size was set to 10 for all other traits (initial tiller number, plant height, length of root, aboveground biomass, belowground biomass, specific root length, Root-shoot ratio, leaf length, leaf width), so \"n/a\" means the measurement data missing.